Filling Dewars ASAP 2460 Operator’s Manual
2-34 246-42800-01 - Aug 2013
Filling Dewars
Precautions
We recommend the following be observed when handling dewars containing liquefied gases:
• Protect yourself by wearing 1) goggles (or a face shield), 2) an insulated or rubber apron, and 3)
insulated gloves.
• When pouring liquefied gases from one container to another: 1) cool the receiving container
gradually to minimize thermal shock, 2) pour the liquefied gas slowly to prevent splashing, and 3)
vent the receiving container to the atmosphere.
• Use a plastic stirring rod when stirring substances in a dewar containing liquefied gases (or other
materials of extremely low temperature). Do not use a glass or metal stirring rod unless it is coated
with some form of protective coating.
• Do not handle heavy objects above the dewar. If an object of sufficient weight is accidentally
dropped into the dewar, the dewar may shatter.
Always handle dewars with care. Any product incorporating a vacuum is a potential
safety hazard and should be treated with caution.
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